\documentclass[a5paper,twoside,12pt]{book}
\input{preamble}
\begin{document}
\input{frontmatter}
%\large
\Large
\setmainfont{Sanskrit 2003:script=deva}
\setcounter{page}{0}
\pagenumbering{arabic}
\sectionmark{\mbox{}}
\begin{center}
\input{stotras}
\end{center}


\newpage\mbox{}
\clearemptydoublepage
\mbox{}\clearemptydoublepage
\end{document}